Portion of a shoe



FIG. 1 is a top plan view of a portion of a shoe showing our new design;

FIG. 2 is a bottom view thereof; and,

FIG. 3 is a right-side view thereof.

The broken lines in the Figures show environment for illustrativepurposes only and form no part of the claimed design.

The area within the solid and dash-dot lines forms the claimed design.

The ornamental design for a portion of a shoe, as shown and described.